6. When the fertility gradient of the field is in one direction, which design is appropriate–
(A) CRD (B) LSD(C) RBD✓ (D) SPD

7. The principle of making use of greater homogeneity in groups of experimental units to reduce the experimental error is .referred as
(A) Replication (B) Randomization(C) Local control✓ (D) None of these

32. In confounding, generally which order of interactions is confounded–
(A) Lower order (B) First order(C) Higher order✓ (D) All of these

33. Student's t-test is used when sample size is and population standard deviation is not known–
(A) Large (B) Small✓
(C) Both (D) None of these
34. The statistical procedure for estimating whether the difference under study is significant or non-significant is known as–(A) Test of significance✓ (B) Standard error
(C) Level of significance (D) Sampling

35. A normal distribution is due to the work of–
(A) James Bernoulli (B) SD Poisson
(C) Laplace and Gauss (D) Demoivre✓

36. The square of the standard deviation is known as the–(A) Variance✓ (B) Standard deviation
(C) Mean deviation (D) Coefficient of variance

37. Indian Livestock after every Census is conducted–
(A) 2 years (B) 5 years✓
(C) 10 years (D) 20 years

38. The critical difference (CD) is a form of t-test and its formula is given by–(A) CD=t.SE(D)✓ (B) CD=t+SE(D)
(C) CD=t/SE(D) (D) CD=F.SE(D)